I'm reticent to take photos in London for fear of being constantly harassed by rent-a-cops. The Police situation seems to be much better now, after the many, many high profile cases where the Police overstepped the law and prevented members of the public from taking photos legally. It can't be an easy job for them and on the whole they all seem to have got the message that we are allowed to take photos of anything from public places. However, the private security companies don't seem to have the same appreciation of the law.
This leads me to wanting to take photos more covertly, just to avoid trouble. I'm pretty good a taking photos from the hip, but the noise of the camera can still attract attention. The Holga is a good travel camera for me. It's light and if I drop it or lose it, I will be upset, but not as devastated as if I had just dropped my Bronica. Also, to a certain extent the Holga has a certain disarming charm that no other camera has.
I have a few ideas on how to make the Holga quieter, but was wondering if anyone else has done this kind of work before? The Holga community is very active in creating modifications, but I haven't found anything aimed at reducing the noise of the shutter or film advance as yet.